Compound belt.



T. HORSMAN.

OMPOUND BELT.

APPLICATION FILED N0v.3,1911.

Patented Mar. 5, 1912.

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UNITED 'STATES PATENT oFFioE.

'rrioivms HoRsMAN, cronica-eo, ILLINOIS, iz'tssieivoa ro CHICAGO BELTING COMPANY,

. A `oonroaATIoN or ILLINOIS.

coMPoUND BELT.

Specification of Letters Patent.

Patented Marl.' 5, v1,912.

Application filed November 3, 1911. Serial No. 658,435.

To all whom'z't may concer/t.'

Beit known that I, TIioMA's-HORSMAN., a citizen of the United States, residing at Chicago, inthe county 'of' Cook and State of Illinois, have invented certain new and useful Improvements Ain Compound Belts, of whichthe following is a specification.

This invention relates to 'improvements in belts, and more particularly to improvements in compound belts.-

The object of my invention is to provide a compound belt for use onA sheave pulleys of groove constructioingand more.v especiallyl "and claims taken in connection with Athe ac lcompanying drawings, in which-v Figure 1 is a side yelevation of my 11nproved 'belt, part being shown in section 'to ,illustratethe ifastening means; Fig.l 2 isa bottom view of my belt; Fig. 3 isa transverse section 'through a groove pulley, showing the application of my belt thereto and taken on line 3 of Fig'. 4.; Fig. 4 isa longi-` tudinal section through the pulley, the belt being' shown in elevation', taken along the line 4 ofFig. 3;'and Fig. 5 is a side elevation of a slight'modication of my invention. 4

My improved belt comprises a main coun-` tinuousband or strip A, to -the lower face of means of securing .the blocksr rtothe band'.

maybe substituted therefor, as desirable or necessary.

In .t-h, and 4 inclusive, each of `the blocks is formed atoneA end "withV a tongue or V- shapedprojection B3 andA at the other end with notches or grooves B2. The blocks are spaced apart, as shownin Fig." A1,'the laterall edges of the bandbeing formed form. orI ben shown infr-lgs. 1,52..

with inclined surfaces A,and the-lateral edges or sides of the blocks or pieces being inclined at Bf so as to practically form a continuation ofthe inclined lateral edges of the band portion. The blocks are so arranged and designed that when said blocks are in posit-ion, the inclined surfaces A of the band and B of the blocks form converging surfaces, so as to 'provide contacting sides for use with a V- shaped shcave or groovedpulley F, as shown in Fig. 8. i

In the operation of my belt upon a'pull ley-such as F, shown in'Fi'gs. Send 4-of a comparatively small radius, the outer band A ofthe belt when curvingl around said pulley will cause the tongues or projections B3 of the blocks to fit intoor interlock with theadjacent grooves or-notches B2, of the will be obviousA from-the drawings and the.

above description. 'Ihis continuity of friction surface makes for greater 'efficiency and obviates the wrinkling .or .distortion of the belt, owing to the spacin apart of the blocks.A This distortion has een found to be anobjectionable feature in the ordinary form of belt which tends greatly to decrease vthe efliciencyand life of the belt.

In Fig. 5 I have shown a slight modification; The blocks DV and E are secured to the lower face, of the band A', these blocks being similar to the blocks B `of the pre.- -ferred form of belt, the diii'erencebeing that the blocks D are formed at each endw'ith tongues or projections D and alternate with blocks E, which are formed with grooves vor notches E, the tongues lD being adapted to lit into the notches E to form a tongue -and groove connectionwhen' the belt is in use. The `function of this -Inodication' is the same as inthe peferredffor'm show-n in the drawings .and described ,above .and merely illustratesxone of the many mo'difof being embodied.

While I have manner shown and dedes'ribed my mennen with e more or lessrninuteness and as beinggembodied 41n certain preelseiorms, yet 1t 'will be understood that I'do not desire to limitmyself unduly thereto, or any more than is pointed out in the claims: On the contrary, I contemplate all proper .changes in form, construction, and arran ement, the omission of immaterial parts an the substitution of equivalents as circumstances may su'gge'st or necessity render expedient.

1. In a compound belt, the combinationV of a flexible substantially continuous main band portion formingthe widest port-ion of the be1t,1 and a series of pieces secured to the -lower face thereof and spaced apart when lying in one planeand provided with end portions adapted to interlock with the.ad

.jacent pieces when closed together as in the taking of a pulley. i 4- 2. In a compound belt, -the combination oi"alexible substantially continuous main band formingpthe widest portion' ofthe belt and provided withinclined, lateral edges, a series ofpieces secured to the lower face of thel main portion and spaced apartwhen lying.i n a single plane and providedwith latf Y edges', and a series of pieces secured to the lower face of said `belt andfspaoed apart when lying in one plane, said pieces having inclined lateral edgesV forming a continuation of' the 'inclined lateral edges of. the main portion of the belt and provided with `tongued 4and grooved end portions adapted 1- to interlock when said beltis taking a curved f'ofsaid pieces and a Vshaped i otherV end'of each of said pieces so arranged position of small radius as on a grooved pulle 4. lin a compound belt, the combination of a flexible substantially continuous' main' band portion forming tie Widest part of the-belt and provided with inclined lateral edges, a series of pieces secured to the lower face of said belt so as to provide spaces therebetween 'when lying in a single plane, said pieces. having inclined lateral edges forming a substantial continuation of the inclined lateral edgeso'f the main band portiong and a V-,shaped tongue on one end of each'of said pieces' and a Vsha ed groove 'on the other end of each of sai pieces so arranged that each of said pieces .will interloclrwith lthe adjacent pieces when taking Ia Vcurved path. of small radius as around'a pulley. y

5. 'In a' compound belt, the combination oi a 'flexible substantially continuous main bandportion forming the widest part of the belt and 'provided with inclined lateral edges, a series ofpieces secured to the lower face. of said belt so as to provide spaces therebetweenwhen lying in a single plane, said fpieces"` having inclined `lateral edges forming a substantia'f-.continuation of the inclined lateral edges of the main band portion, a V-shaped tongue on one end of each groove on the that each of said pieces willinterloek with the adjacent vpieces when taking a path oiwsmall radius as aroundacurved sheave pulley, and rivets securing said pieces andv main band together.

In testimony whereof 'I- have subscribed my name.

l'rHoMAs HoRsMAN.-

Witnesses: i

Gl 0. THoMAs,

HENRY PARKS. 

